Arhytmy or Arrhytmy: How To spell?
The word Arhytmy is misspelled against Arrhytmy, a noun meaning "Want of rhythm."
Arrhytmy has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings a & hytmy which should not be misspelled with single 'R'
Wrong Spelling:  a-r-hytmy  Correct Spelling:  a-rr-hytmy 
Navigate all incorrect spellings of Arrhytmy to spell it right.